St. Faustina is a reliable witness on this point: she spoke to Our Lord about this many times, and He always expressed His infinite love for humanity.

“While I was saying the chaplet [of Divine Mercy], I heard a voice which said, Oh, what great graces I will grant to souls who say this chaplet; the very depths of My tender mercy are stirred for the sake of those who say the chaplet.” (No. 848)